Energy storage system is a device or group of devices assembled that is to convert the electrical energy from power systems and store energy in order to supply electrical energy at a later time when needed. A device/system that stores energy is called a battery or accumulator.

Energy Storage System (ESS) is a game-changing technology which has the ability to store energy for later use. Energy storage technologies encompass a variety of systems, which can be classified into five broad categories, these are: mechanical, electrochemical (or batteries), thermal, electrical, and hydrogen storage technologies

Carbon neutrality is a state of balance between the CO2 emitted into the atmosphere and the CO2 removed from the atmosphere

Achieving carbon neutrality means that that your carbon dioxide output has a net neutral impact on the environment, and it can help stem the effects of climate change. Greenhouse gasses like carbon dioxide increase average temperatures worldwide, which in turn contribute to rising sea levels, changing weather patterns and other factors associated with climate change. 

Companies, processes and products become carbon neutral when they calculate their carbon emissions and compensate for what they have produced via carbon offsetting projects. Avoidance and reduction of carbon emissions an important step in holistic climate action.  Energy storage can allow 57% emissions reductions with as little as 0.3% renewable curtailment.

Energy storage could help make more efficient use of power generated by sources such as wind and solar and could help power grids move away from relying on fossil fuels for energy.

References:

1. https://www.cnet.com/home/energy-and-utilities/what-does-carbon-neutral-mean/

2. Sioshansi, R., & Johnson, J. X. (2019, July 30). The role of energy storage in deep decarbonization of electricity production. Nature News. Retrieved November 1, 2022, from https://www.nature.com/articles/s41467-019-11161-5 

3. The Ohio State University. (2019, July 30). Energy storage could reduce emissions that cause climate change. Retrieved November 1, 2022, from https://news.osu.edu/energy-storage-could-reduce-emissions-that-cause-climate-change/